Actually, I accidently bought EURUSD at 1.3068 due to bullish divergence at 15 minutes timeframe. What make me shocked is that the price spike up 70 pips within just a few second after I bought it. Then I noticed that SNB did intervene its currency.

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How much the intervention, I am not sure. But in my experience, if only Swiss do intervene, this spike will not be in long time. The best example is when Japan intervenes Yen. Anyway, closed half of the position with 65 pips and the rest just lock the profit with a few pips above breakeven, and let see how it will be.